JPH0762865A - Connection structure of sheathing board - Google Patents

Abstract

PURPOSE:To connect sheathing flat belt boards which are brought when a form panel is cut or in other cases with each other to form the same plane and reuse them as form panels with a required size. CONSTITUTION:A groove 3 is formed at the end of a sheathing board 2. A buried flange 5 fitted in the groove 3 and a backing flange 6 contacting the rear face of the sheathing board 2 are connected with each other at the web 7. And a member 4 for joint is used, in which a reinforcing rib 8 is provided at the backing flange 6. The member 4 for joint is fitted to the sheathing board 1 so that it holds the part between the groove 3 at the end of sheathing board 2 and the rear face thereof in the space between the buried flange 5 and the backing flange 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure for barrier plates.

[0002]

2. Description of the Related Art When constructing concrete structures such as various foundations and walls, it is common to place concrete in a wooden concrete formwork for construction. In such a wooden concrete formwork, a plurality of weirs are formed on the back surface (the surface that contacts the concrete is the front surface, and the surface on the opposite side is the back surface. The same applies hereinafter in this specification) of the dam plate made of plywood or the like. It is configured by joining formwork panels, which are formed by fixing piers, in a flush or crossed shape according to the required external shape of the concrete structure.

As the above-mentioned form panel, a form having an outer dimension of about 90 × 180 (cm) is prepared as a standard product, but the outer shape of the concrete structure is not uniform. Therefore, the above-described standard product is cut into a convenient size or shape for use at each site.

[0004]

The wood scraps of the weir plate that remain after cutting the formwork panels are usually disposed of as waste material. In addition, generally, after the cast concrete has hardened to some extent, the form panel that has been peeled off is reused if it can be reused to reduce the cost, but it is cut and used as described above. The formwork panel
Since it is peculiar in terms of dimensions and shape, it has little opportunity to be reused and was often disposed of. Therefore, it was wasted in terms of cost.

The present invention has been made in view of the above circumstances, and enhances the utility value as a form panel by joining the dam plates that have become dimensionally or shape-specific by cutting. It is an object of the present invention to provide a joint structure for a weir plate that can reduce cost waste as much as possible.

[0006]

In order to achieve the above object, the present invention takes the following technical means. That is, the present invention, two dam plates having a groove formed in the edge portion so as to cut through in the thickness direction, and between these edge plates with the groove plates facing each other The strips for joints provided along with the strips for joints, the embedded strips protruding from one end of the web to both sides thereof and fitted into the grooves of the dam plate, and the other end of the web to both sides thereof. It is characterized by having a backing flange that projects and abuts the back surface of the dam plate, and a reinforcing rib that projects from the backing flange toward the back direction of the dam plate.

[0007]

In the present invention, the embedded flange of the joint strip is fitted into the groove of one of the dam plates, so that the joint strip is formed between the embedded flange and the backing flange at the edge of the dam plate. A part of it will be clamped and it will be attached to the weir plate. By using the embedded flange and the backing flange on the opposite side of the web for the joint strip, this joint strip and the other dam can be attached in the same manner as described above. The reinforcing ribs of the joint strip also serve as a crosspiece for reinforcing the surface of the dam plate.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a back surface side of a formwork panel 1 obtained by carrying out a joining structure according to the present invention. A plurality of strip-shaped strips having a short widthwise dimension (3 in the drawing) are formed by cutting.
The barrier plates 2 are joined together in a flat manner by the joint strips 4 to form a single form panel 1 having a fixed size as a whole. Reference numeral 10 is a rim pier.

As shown in FIG. 2, the dam plate 2 is formed with a groove 3 at an edge portion to be joined therethrough so as to divide the thickness direction thereof. In this embodiment, the barrier plate 2
The edge portion of one of the weir plates 2 (right side in FIG. 2) is formed near the groove 3 so that diagonal contact can be made on the surface side of the weir plate 2 with respect to the groove 3, while the other weir is formed. In the plate 2 (on the left side in FIG. 2), the inclined end faces were formed in a state where the sharp end portion was formed near the surface. By doing so, it is easy to bring the barrier plates 2 into close contact with each other, and there is an advantage that the water blocking effect is enhanced. Of course, not limited to this, it is also possible to perform a right angle joint.

On the other hand, the joint strip 4 is a long molded body formed by extruding or drawing an aluminum alloy or the like, and its cross-sectional structure is that of a buried flange 5 projecting from one end of the web 7 to both sides thereof. , The backing flange 6 protruding from the other end of the web 7 to both sides thereof, and the backing flange 6 to the web 7
Reinforcing ribs 8 projecting in the opposite direction (back side of the dam plate 2)
And a protruding end flange 9 projecting to both sides at the protruding end of the reinforcing rib 8. The buried flange 5 is the groove 3 of the barrier plate 2.
And the backing flange 6 abuts on the back surface of the dam plate 2, and the embedding flange 5 and the backing flange 6 connect the dam plate 2 to each other.
A part of the edge portion (between the groove 3 and the back surface) is pinched,
It can be attached to the barrier plate 2 by force fitting.

The mutual distance between the buried flange 5 and the backing flange 6 is such that the buried flange 5 is positioned at the central portion in the thickness direction of the dam plate 2, for example, the thickness of the dam plate 2 is 12
Since 6 mm is often used, it is about 6 mm
It is said to be before and after. Further, the protruding dimension of the embedded flange 5 with respect to the web 7 in the width direction is determined by the groove 3 formed in the edge portion of the dam plate 2.
Therefore, the range where the strength of the dam plate 2 is not weakened, for example, about 8 mm when the thickness of the dam plate 2 is 12 mm. It is preferable that the projecting size of the backing flange 6 and the projecting size of the reinforcing rib 8 are as large as possible within a reasonable range.

As shown in FIGS. 3 (a) and 3 (b), the reinforcing rib 8 is not limited to the protruding position and the number of protruding portions with respect to the backing flange 6, the presence or absence of the protruding end flange 9, and the like. Together with this flange 6, L-shaped, square pipe-shaped,
It may have a groove shape or the like. As a method for forming the groove 3 on the edge portion of the barrier plate 2, a method shown in FIG.
And large and small circular saw teeth 15 having different diameters as shown in FIG.
16 is coaxially overlapped, this is attached to the rotating shaft of a machine tool (not shown), and the end edges of the dam plate 2 are pressed against these rotating circular saw teeth 15, 16. . The circular saw teeth 15 on the smaller diameter side are necessary for cutting the web 7 of the joint strip 4 to escape. In addition to the circular saw teeth 15 and 16, circular saw teeth (not shown) having a trapezoidal cross section for making the edge of the barrier plate 2 an inclined surface may be overlapped.

To attach the joint strip 4 to the barrier plate 2,
The joint strip 4 is inserted in parallel to the end edge of the barrier plate 2 along the longitudinal direction, or is press-fitted in a direction orthogonal to the longitudinal direction. In either case, nails or No screws or adhesives are needed.

[0014]

According to the present invention, which has the above-mentioned structure, the wood strips of the weir plate remaining after cutting the formwork panel of a fixed size are firmly and evenly flushed by the joint strip. Since it can be joined to, it is possible to assemble a formwork panel of a required size. Therefore, it is possible to effectively utilize the cut wood of the weir plate. In this case, since the reinforcing rib of the joint strip acts as a pier for surface reinforcement of the dam plate, it is sufficient to attach only a rim for the pier, and it is easy to manufacture as a formwork panel. is there.
In addition, even in the form panel that is cut and used, it is possible to assemble it into a form panel of the required size by combining wood blocks of the weir plate (or the form panel that is cut and used separately). It can also be used. With these, the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing a form panel obtained by implementing a joining structure according to the present invention from the back surface side thereof.

FIG. 2 is a plan view showing an attachment state of a joint strip and a dam plate.

FIG. 3 is an end view showing another embodiment of the joint strip.

FIG. 4 is an enlarged cross-sectional view showing a situation in which a groove is formed at an edge portion of a barrier plate.

FIG. 5 is a partially omitted plan view showing circular saw teeth used for forming grooves.

[Explanation of symbols]

 2 Weir plate 3 Groove 4 Joint strip 5 Embedded flange 6 Backing flange 7 Web 8 Reinforcing rib

Claims (1)

[Claims] 1. A pair of dam plates, each having a groove formed at an edge portion thereof so as to cut through in a thickness direction, and these dam plates are arranged such that the grooves face each other, and the gaps are provided between the edge portions. The above-mentioned joint strips project from one end of the web to both sides thereof and are embedded in the grooves of the weir plate, and the other end of the web projects to both sides thereof. And a backing flange that abuts the back surface of the weir plate, and a reinforcing rib that projects from the backing flange toward the back of the weir plate.